Recent advances in tracking technology have revealed significant intratropical movement of NearcticNeotropical migratory songbirds during their non-breeding season. We report the movement of 25 veeries (Catharus fuscescens) over multiple seasons (2009)(2010)(2011)(2012)(2013) through equatorial rain forests of South America. Veeries initially settled on the Brazilian Shield geological formation but undertook an intratropical migration to a second South American region in January, February or March. Consequently, our study is the first to track individual forest passerines to document an annual migration from the Brazilian Shield to the Guiana Shield and into lowland regions of Amazonia. The movement and settlement patterns showed no spatiotemporal relationships with Nearctic-Neotropical migration, remained in accordance with the flood pulse of the Amazon basin, and were spatially and temporally complex suggesting relatively ancient ancestral origins. The ability to isolate the migration event from Nearctic-Neotropical migration is an important contribution to the ongoing discourse regarding the evolution of trans-hemispheric migration in the genus Catharus.

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The long-recognised name of the Veery Catharus fuscescens (Stephens 1817) was intended to replace Tawny Thrush Turdus mustelinus Wilson, 1812, which was preoccupied by T. mustelinus J. F. Gmelin, 1789. Herein, I demonstrate that T. mustelinus Wilson is unidentifiable because it was based on attributes shared by more than one species, including some features that are a better match to other Catharus species than to Veery. None of the specimens mentioned in Wilson's description is extant. To maintain traditional nomenclature and to prevent destabilising confusion arising from alternative identifications, I designate a neotype for Turdus mustelinus Wilson and its replacement names, including T. fuscescens Stephens, fixing the name to the taxon to which it has been traditionally applied. The neotype is a colour-banded male that was tracked over two consecutive years with light-level geolocator and GPS tracking units. To my knowledge, it is the first bird specimen in any collection for which migratory data were collected with either device.The taxonomic history of the forest-dwelling thrushes of eastern North America (Catharus) ranks among the most obscure and confusing chapters of American ornithology. Repeatedly, multiple names were unknowingly applied to a single species, or conversely, attributes of multiple species were combined to form a composite species (Coues 1878). Today, in addition to Wood Thrush Hylocichla mustelina, which has sometimes been placed in Catharus, ornithologists recognise nine taxa of five species that breed in and / or migrate through the Mid-Atlantic region of eastern North America: C. guttatus faxoni (Bangs & T. E.

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